import datetime
if __name__ == '__main__':
    print(datetime.date.today().strftime('%d/%m/%Y'))
    BirthDate = datetime.date(1986, 1, 21)
    print(BirthDate.strftime('%d/%m/%Y'))
    BirthNextDay = BirthDate + datetime.timedelta(days=1)
    print(BirthNextDay.strftime('%d/%m/%Y'))
    FirstBirthday = BirthDate.replace(year=BirthDate.year + 1)
    print(FirstBirthday.strftime('%d/%m/%Y'))